Fix memory leaks when performing tranformations.  The code was mallocing structures, but not freeeing them.  In addition, the proj4 api takes struct values, not pointers.
Fix memory leaks when performing tranformations.  The code was mallocing structures, but not freeeing them.  In addition, the proj4 api takes struct values, not pointers.

LouisStAmour/proj4rb19,LouisStAmour/proj4rb19